迷人的極簡主義網球選手插畫，以天真素描本風格和水彩筆觸呈現

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Transform the image into a charming minimalist hand-drawn doodle illustration. Preserve the main subject, pose, proportions, and overall composition while simplifying everything into playful, childlike forms. Use loose brush-pen outlines with subtle wobble, uneven pressure, and naturally imperfect handmade strokes. Keep the linework clean and sparse, with tiny expressive details that give the subject personality. Add delicate watercolor-ink touches with very soft, restrained color accents while maintaining plenty of clean white space. Create a naive sketchbook feeling with whimsical cartoon shapes, spontaneous marks, gentle imperfections, and an authentic handmade drawing quality. Avoid excessive detail, realism, heavy shading, or polished digital-vector edges. The final result should feel like a cute artist’s notebook doodle drawn by hand with watercolor ink.